Shelf element



FIG. 1 is an elevated front view of a shelf element in accordance with a first embodiment of the present invention;

FIG. 2 is an elevated front-right perspective view thereof, with the front-left perspective view being a mirror image thereof;

FIG. 3 is an elevated rear perspective view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken lines included in the drawings show features that form no part of the claimed design. 

CLAIM The ornamental design for shelf element, as shown and described. 